How to Migrate From Codeium to Windsurf
This is an unusual migration because Codeium and Windsurf come from the same company, Exafunction. Windsurf is where Exafunction is putting its bets going forward: a full AI-native IDE with an agentic coding engine called Cascade, rather than the plugin-first model Codeium represents. If you've been on Codeium for a while, you're not switching vendors, you're switching product lines within the same family.
The practical reason most Codeium users end up trying Windsurf is Cascade. Codeium's autocomplete and chat are good, but Cascade can actually plan and execute multi-step changes across your codebase with awareness of what it's touched. Teams that started with Codeium because it was free and capable often find themselves wanting that agentic layer once they've seen it work.
What's actually different
Codeium is a plugin; Windsurf is an IDE. That's the structural difference everything else flows from.
| Feature | Codeium | Windsurf |
|---|---|---|
| Autocomplete | Yes (fast, multi-language) | Yes (Windsurf Tab) |
| Chat | Codeium Chat | Chat + Cascade Agent |
| Agentic multi-file edits | No | Cascade (strong) |
| Codebase context | Limited | Deep (indexed) |
| IDE model | Plugin for VS Code, JetBrains, etc. | Standalone (VS Code fork) |
| Free tier | Yes (generous) | Yes (limited) |
| Pricing | Free / $12 Teams | Free / $15 Pro |
| Local model support | No | No |
The Cascade agent is the real differentiator. It maintains a "flow" of what it's done in your session: files read, changes made, decisions taken. You can ask it to implement a feature, and it will plan the steps, make the changes, run relevant checks, and explain what it did. Codeium's chat gives you suggestions; Cascade executes.
Mapping your existing workflow
Because the products share a lineage, the conceptual gap is smaller than most migrations.
Autocomplete. Codeium's inline completions map directly to Windsurf Tab. The model quality is similar (both use Exafunction's own models plus access to external models on paid plans). Tab to accept, Escape to dismiss, same as before.
Codeium Chat. The chat interface in Codeium maps to Windsurf's Chat mode. Same general pattern: select code, ask questions, get explanations or edits. The difference is that Windsurf Chat has tighter integration with Cascade, so you can escalate from a chat question to an agentic task without switching contexts.
Context handling. Codeium's context window was per-file or manually scoped. Windsurf indexes your whole codebase and Cascade uses that index actively when planning changes. You'll notice it referencing files you didn't explicitly mention, which feels different at first but is usually correct.
VS Code extensions. Windsurf is a VS Code fork. Your extensions carry over on first launch. If you were using Codeium as a VS Code plugin, you'll be switching from plugin to standalone app, but your other extensions stay intact.
JetBrains. Codeium has JetBrains plugins. Windsurf is VS Code only. If your team uses IntelliJ or Rider, the migration isn't directly available yet.
The actual migration steps
1. Install Windsurf. Download from codeium.com/windsurf. It will offer to import your VS Code profile on first launch.
2. Sign in with your Codeium account. Your Codeium account works for Windsurf. If you're on a Codeium Teams plan, check with your admin about whether the organization has Windsurf access provisioned.
3. Understand the tiers. Windsurf Free gives limited Cascade "flows" per month. Windsurf Pro ($15/month) gives more flows and access to stronger external models. If your team was on Codeium Teams ($12/seat), evaluate whether Windsurf Pro makes sense at the individual level.
4. Index your codebase. Open your project and let Windsurf index it (status indicator at the bottom). On large repos this takes a few minutes. Once indexed, Cascade has real project awareness.
5. Learn Cascade. The Cascade panel opens from the sidebar. You can switch between Chat mode (ask questions, get suggestions) and Agent mode (Cascade executes changes). Start with Agent mode on a small, well-scoped task. The interface shows you a step-by-step plan before executing, which you can review.
6. Port any team rules. If you had Codeium configured with specific instructions or your team had shared chat templates, recreate those in Windsurf's Rules settings (Settings > AI Rules). This is the equivalent of .cursorrules in Cursor.
7. Wind down Codeium. If you're moving the whole team, coordinate the transition. Codeium and Windsurf can run side-by-side during the evaluation period since they're separate products.
First-day checklist:
- Windsurf installed with VS Code profile imported
- Codebase indexed
- One Cascade Agent task completed
- AI Rules file populated with project conventions
Gotchas you'll hit
Flow limits on free tier. Cascade "flows" count as units of agentic work. On the free tier, you'll exhaust your monthly allocation quickly if you use Cascade heavily. Heavy users should budget for Pro.
Cascade can be slow. When Cascade is planning and executing a multi-step change, it reads files, reasons about dependencies, and makes sequential edits. This is slower than Copilot-style autocomplete or even Cursor Composer for simple tasks. It's doing more actual work, but the latency is real.
The editor is new to you. Even though it's a VS Code fork, small UX differences exist. The Cascade panel layout, the flow history sidebar, and the model selector are all Windsurf-specific. Expect an adjustment period.
No Vim-native support. Windsurf has Vim emulation (VSCodeVim plugin works), but hardcore Vim users often find it imperfect.
JetBrains teams are stuck. Windsurf is VS Code only. Teams split across VS Code and JetBrains will have an inconsistent experience.
When NOT to switch
Keep Codeium if:
- Your team uses JetBrains IDEs. Windsurf isn't an option there yet.
- You primarily need fast autocomplete and the chat features in Codeium are sufficient. The overhead of Windsurf Pro isn't justified by autocomplete quality alone.
- You're on Codeium's free tier and the Windsurf free tier's flow limits are too restrictive for your usage pattern.
- Your organization's procurement process treats Codeium and Windsurf as separate vendor approvals. Check before assuming they're interchangeable.
Windsurf earns the switch when you need Cascade's agentic capabilities regularly: implementing features from a description, refactoring across files, or handling tasks where "suggest code" isn't enough and "execute the change" is what you actually want.
Because both products share a company and a codebase foundation, the migration friction is lower than most tool switches. The main investment is learning Cascade's agent model: how to write effective prompts for it, how to review its plans before execution, and when to let it run versus when to step in. That learning curve pays off quickly once you're using it on real tasks.